Attachment



(No Model.)

P. H. CHILTON. `EMBROIDBRING ATTACHMENT.

Patented Aug. 1,' 1882.4

UNITED .l STATES PATENT OFFICE.

lFRANKLIN H. CHILTON, OF NEW YORK, N. Y., ASSIGNOR TO THE EMPRESSEMBROIDERER COMPANY, OF SAME PLACE.

EMBROIDERING ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 262,002, dated .August1, 1882.

Application filed January 30, 1882. (No model.)

To all whom it may concern VBe it known that I, FRANKLIN H. CHILTON,

of New York, in the county of New York and State ofNew York, haveinvented a new and useful Im provement. in Embroidering Attachments, ot'which 'the following is a specification, reference being had to theaccompauying draw- 'lugs The invention relates to an improvement 1o inembroidering attachments for sewing-machines; and it consists in thegeneral construction and arrangements of the operative parts and thespecific construction of the foot of the attachment, as hereinafterfully described,and

particularly pointed out in the claims.

' Referring to the accompanying drawings, Figures 1 to 6 are detachedviews of the various parts of the attachment, which will be understoodfrom the reference made thereto herezo inafter. Fig.7 is atop view of anembroiderer embodying the elements ofthe invention. Fig.

8 is a side elevation of same. Fig. 9 is a top view of a foot anddevices, illustrating thefirst position ofthe carrier and detainer. Fig.10 is a similar view,showing the last position ofthe carrier anddetainer. Fig. 11 is a perspective view of the lever E. Fig.l2 is a topview, and Fig. 13 a front view, of amodilied form otpresser-foot. Fig.14 is avfront View of a modilied form of embroiderer.

A denotes the foot of the attachment,wl1ich is'rmly secured to the partB, by which the attachment may be connected with thepresserbar ofthesewing-machine. The part B,which 35 is composed of the horizontal bar aand vertical `hollow standard b, will by preference be cast in onepiece, and in the front end of the bar a will be provided a verticalaperture and appropriate set-screw as means for applying 4o theattachment to the machine. The foot Ais secured at its rear portion tothe lower sideof the bar a, the front portion being left entirely y openat x, so that the operator may he able to observe the formation ofthestitches, and upon oneside of the foot is provided a lip, d, ar-

ranged in suitable relation for the reception of a thread-eye, e, and toconstitute a bushing which will assistin preventing theembroidering-thread from getting beneath the thread- 5o carryingdevices.

l Within the hollow standard b is placed the vertical post C, havingsecured upon its upper end, either by riveting or by a screw orotherwise. the horizontal arm D, the outer extremity of which is roundedand placed between thejawsf at the upper end of the short arm of thelever E, which lever is pivoted on the side of the standard b, and hassupplied on the extremity of its long arm, which extends toward thefrontof the device, the pivoted loop E', 6o

which, when the attachment is put into practical use, is secured uponand moves with the screw which holds the needlein the needle-bar,whereby movement is communicated to the operative parts of theattachment. o5

Upon the side of the casting B is secured a bracket, g, or similarcontrivance, which eX- tends upward above the sweep ot' the lever E, andis supplied with an eye for the reception of the embroidering-thread. 7o

Upon the lower end of the post O is secured,- by riveting or otherwise,the rear end of the forked arms h, which extend forward, encircling thevertical portion of the foot A and supporting in their front extremitiesthe segmental rack t', the teeth of which mesh with thepinion H, securedupon a screw or pivot in about the center of the foot A; The forked armsh, carrying the rack t', are iinmovably secured upon and at right anglesto the post O. 8o Thus as the post is caused to have a semi-rotarymovement by the operation ofthe lever E, the rackt' will oscillate backand forth over the presser-foot from one side thereof to the other andimparta rotary movement to the pinion H and its connecting devices.

Upon the lower surface of the pinion H is rigidly affixed the shank -ofthe oscillating thread-carrier l, the form of which is shown in adetached view in Fig. 9. From the shank 9o of the carrier I. extends thepart or extension J, which is in the form of an are of a circle or hook,as indicated in a detached view. The point of the hook-shaped extensionJ is especially constructed with a view of preventing theembroidering-thread from getting beneath the carrier, and is supplied atits lower edge with the long arm m and at its upper edge with the shortarm a, the operation of which l will appear in full hereinafter. Ioo

Immediately beneath and arranged to move simultaneously with the carrierI is the cam L, which passes outward from the center to thecireumf'erence ot' the shank ofthe carrier I, its sides heilig flat atits outer edge, describing a segment of a circle.

I prefer to construct the pinion H with a squared shank or shank ofother angular form and to form corresponding apertures in thethread-carrierl and cam L, whereby in securing the same to the foot Athe shank can be passed through the apertures in the carrier and cam,and through an aperture in the foot and riveted on the lower sidethereof.

Upon the upper surface ofthe footA is placed the movable threaddetainerM, and pivotally secured in place by a pin or pivot situated upon therear portion ofthe foot. The central portion of the shank of thethread-dctainer M is removed, forming an aperture, m', having tlattenedsides and front edge, its rear edge being rounded. At the front portionof the threaddetainer Mis the hook-shaped extension N, supplied with avertical lip, a', as indicated in a deu tached view. When thethread-detainer and thread-carrier Iarein position the cam Lwillbeinclosed within the aperture m', and by moving against the sidesthereof, when actuated by the thread-carrier, will cause the detainer tooscillate upon its pivot, whereby the carrier and dctainer will have asimultaneous movement, with the effect upon the embroideringthreadhereinafter set forth.

In practice the attachmen'tis applied to the presser-bar ofthesewing-machine, and the le- .ver E connected with the needle-bar bymeans of the loop F, as hereinbefore set forth. The sewing-needle isthreaded in the usual manner, and the embroideringthread is brought froma suitable tension and passed through the eye in the bracket g, afterwhich it enters an eye on the lever E, and is then returned to the eyeinthe bracket g, and afterward carried downward and inserted through thethreadeye e, the end of the thread being then passed under the frontportion of the foot, and the work placed in position, the machine is setin motion. The first downward movement of the needle-bar and lever Ecauses the rack to sweep across the pinion H, the movement of whichpinion at this moment carries the thread carrier I away from the frontof the foot A toward the lever E, the point of the threadcarrier at theend of this (its backward) movement being in proper relation to the eyee to catch the embroidering-thread upon its return movement toward thefront of the foot. Simultaneous with the movement, of the carrier I thecam L, which is rotated by the pinion H, strikes against the side of theaperture m2 and imparts to the thread-detainer M a backward movement onits pivot in a direction opposite to'that of the thread-carrier. Thus,when the lever E is depressed the thread-carrier and thread-detainerhave opposite movementsthat is to say, the)7 rotate in oppositedirections--whereby their hook-shaped points separate from each otherand pass to the sides of the presser foot. TheY succeeding upwardmovement of the needle-bar andlever E operates to produce aoontrarymotion of the thread carrier and detainer-that is, they are caused torotate on their pivots toward each otherwhereby at the proper time thepoints ofthe carrier and detainer passeach other across the opening w,completely closing it. When the needle-bar and lever E is given the saidupward movement the thread-carrier I catches the embroidering-thread andcarries it past the center of the foot A. At the same time thethread-detainer moves toward and past the point of the carrier l, and indoing-so its lip a. moves against that portion of theembroidering-thread which extends from beneath the foot A to and aroundthe shorter point of the hook on the end ot' the carrier I, whereby aloop is formed, as indicated, which, when the needle-bar descends,(separating the thread carrier and detainer,) is drawn to the propersize and sewed to the goods. Each downward stroke of the lever Eseparates the thread detaincr and carrier, as described, so as to allowthe embroidering-stitch to be made, and cach upward stroke of the leverE brings them forward again across the front of the foot A, whereby theembroidering-thread is placed in the position above described for theformat-ion of another loop. The movements above set forth are repeatedwith every stitch ot' the embroidery, one complete stitch being formedwith each full movement of the lever E.

Particular attention is invited to the construction of thethread-carrier and thread-detainer, which have been made with a view ofproducing a perfect embroiderer with the consumption of the least amountof metal, labor, and expense. The extensions on the ends of both carrierand detainer coact to prevent at any stage of the operation theembroideringthread from getting improperly caught or from slippingbeneath the operative parts ot' the attachment.

The attachment above described is the preferred embodiment of theinvention; but in Figslt to'l7,inclusive,aremodications which I includewithin the scope ot' my invention. One ofthese modifications is in thefoot A, covered at its sides. These sides cover the oscillating toothedrack and prevent the contact therewith of the fabric being treated.

In Fig. 17 the modification consists in the means employed for givingmotion to the rack which operates the pinion H. In this attachment therack is secured or formed on the lower end of a bar, B', pivoted at itsupper end and having a cam-slot, D, running along its longitudinalcenter, in which slot a lug eX-` tending from the side ofthe lever E ismade to travel and cause the bar B to vibrate, whereby the rack is givenits movement back and forth against the side ot' the pinion H. The leverreceives its motion from the needle-bar IOC IIO

in the customary way, and the movements of the thread carrier anddetainer are the same as those set ont Vconcerning the main embodimentof the invention described in the first part ot' this instrument. l

What I claim as my invention, and desire to secure by Letters Patent,is- A 1. In an embroidering attachment, the press` er foot, oscillating`thread carrier, and the thread-detainer, the carrier and detainer beingconnected by mechanism to havea simultaneous movement communicated froma rack andV pinion, substantially as set forth.

2. In an embroidering attachment, the open presser-foot, the movablethread-carrier I, having at its end the elongated point m and theshorter point, n, the thread -detainer having the lip n and extendedportion N, the Whole adapted to operate substantially in the mannerhereinbefore described. i

3. Thepresser-foot, oscillating thread-carrier,

and pvoted thread-detainer having a move-A ment simultaneous with thatof the carrier and being cut to receive the actuatingcam, substantiallyas set forth.

4. In an embroidering attachment, the oscillatin g thread-carrier,thread-detainer, and pinion and rack operated by the vertical post, thehorizont-al arm, and actuating-lever, the carrier and detainer beingconnected by mechanism to have a simultaneous movement communicatedfromthe rack and pinion, substantially as setforth.

5. The actuating-lever having jaws to receive the end of the horizontalarm connected withrthe vertical post, the rack and pinion,thread-carrier, and the thread-detainer, the carrier and detainer beingconnected by mechanism to have a simultaneous movement communicated fromthe rack and pinion, substantially as setforth.

6. The actuating-lever having jaws to receive the end of the horizontalarm connected with the vertical post, the rack and pinion,thread-carrier, and thread-detainer, substantially as set forth.

7. The threadcarrier I, consisting of the shankV and the hook-shapedextension J, having at its end the elongated point m and immediate] yabove it the shorter point, ln, the carrier being adapted to move in thearc of va circle, the elongated point m to sustain theembroidering-thread, and the shorter point, n, to carry it againstathread-detainer, substantially as set forth.

In testimony that I claim the foregoing improvement in embroideringattachments for sewing-machines, as above described, I have hereunto setmy hand this 23d day of January, 1882. Y

FRANKLIN H. CHILTON.

Witnesses:

CHAS. O. GILL, HERMAN GUs'roW.

